problem with PHP5 installation

I followed the Wiki instruction at http://wiki.dreamhost.com/index.php/Installing_PHP5 to install my own instance because i want iconv library linked and need php.ini modification too.

installscript failed in the make process.
checking for IMAP Kerberos support... no
checking for IMAP SSL support... /usr
checking for pam_start in -lpam... yes
checking for crypt in -lcrypt... yes
configure: error: Cannot find rfc822.h. Please check your c-client installation.
make: *** No targets specified and no makefile found. Stop.
make: *** No rule to make target `install'. Stop.
cp: cannot stat `/home/txie/WUCAICLUB.COM/src/php/php-5.1.2/php.ini-dist': No such file or directory
cp: cannot stat `/home/txie/WUCAICLUB.COM/php/bin/php': No such file or directory

any reason why? Thanks.